Restauration de la cité du Lignon
Type
Habitation
Date de réalisation
2011
Ingénieur civil
NC
Maître de l'ouvrage
Office du patrimoine et des sites (OPS) - DALE - République et Canton de Genève, Office cantonal de l’énergie (OCEN) - DIME - République et Canton de Genève, Comité Central du Lignon
Autre(s) intervenant(s)
SORANE S.A. Ingénieurs conseils en rationalisation énergétique, Dominique Chuard architecte
Surface brute
NC
Coût
NC
Procédure
mandat direct
Architecte
TSAM ENAC EPFL / FRANZ GRAF , GIULIA MARINO
Interview de l'architecte
Descriptif
The cite de Lignon was designed by the architect Georges Addor and his partners (1963-1971). This monumental complex is composed of eight-four corridors of roughly one kilometre in length, making this object the longest “long narrow block” in Europe at the time of its execution. It has been protected since 2009 by a site plan. Aware of the challenges associated with this element of great heritage value, the public authorities were incited to undertake a prior global study of the intervention strategies. This foresight made it possible to control the restoration of the many constructions with a long-term vision of the future image of this iconic object in the architectural production of the 1960s in Geneva. The research work was entrusted to the l’Ecole polytechnique fédérale de Lausanne (TSAM). The study made it possible to validate a whole series of conservatory measures necessary for bringing this envelope into conformity with energy standards. The one hundred and twenty-five thousand square meters of curtain wall constitutes a unique case in the canton. The study’s announced objective is to retain as much as possible of the substance of this curtain wall, a feature of the building whose construction system at the time was very simple: a glass skin composed of a standard window with wood and aluminium frame, fastened to a rational structure in reinforced concrete. Four possible methods have been put forward for replacing all or part of the elements of this immense envelope.
Plans
Photos
Autres références
Restauration de la cité du Lignon
Laboratoire des Techniques et de la Sauvegarde de l’Architecture Moderne (TSAM) Ecole Polytechnique Fédérale de Lausanne (EPFL-ENAC-TSAM) BP 4126 (bâtiment polyvalent) Station 16 1015 Lausanne
Tél: +41 21 693 36 29
franz.graf@epfl.ch
Accessibilité TPG
Arrêt "Cité Lignon": Lignes 7 - 9 - 23 - 51
Credits
Images ©Jaeger - centre d'iconographie genevoise, ©Claudio Merlini et ©archives Addor & Julliard Plans ©F. Graf & G. Marino